[Elements]: Fixing state-on/off colors for :hov and :cls buttons in high contrast mode
[Elements]: Fixing state-on/off colors for :hov and :cls buttons in high contrast mode

Issue:
- :cls and :hov buttons in the Elements side panel do not change color when open/closed in High Contrast mode

Changes:
- disabling forced-colors for the toolbar-text when the state of the button is on and setting the color to "Highlight"

Gifs:
Before: https://imgur.com/KMc5cEs
After: https://imgur.com/U27Hi9y

Bug: 1075785
Change-Id: I888761393956ea2fd7b72460cb75e27cddece34f
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2169358
Reviewed-by: Shane Clifford <cefa063138c0abe680fc1b6813cf10cbfcb7387b@microsoft.com>
Reviewed-by: Vidal Diazleal <335057fdcb453cd6c3610dd9d7c799602ff689e0@microsoft.com>
Reviewed-by: Kalon Hinds <0953a07de5dd99912b5643571c8ed9864c017a6d@microsoft.com>
Commit-Queue: Michael Liao <00d75d81082fdf74688ec453c516b42f7cbf0f40@microsoft.com>

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